chore: update dev dependencies and fix code style

Gruntfile.js

@@ -64,8 +64,7 @@ module.exports = function (grunt) {
 
     jshint: {
       options: {
-        jshintrc: '.jshintrc',
-        reporterOutput: ''
+        jshintrc: '.jshintrc'
       },
       files: [
         'Gruntfile.js',
@@ -76,7 +75,7 @@ module.exports = function (grunt) {
 
     eslint: {
       options: {
-        config: '.eslintrc.json'
+        useEslintrc: true
       },
       target: [
         'Gruntfile.js',

package.json

@@ -47,12 +47,12 @@
     "grunt": "^1.0.3",
     "grunt-contrib-clean": "1.1.x",
     "grunt-contrib-concat": "1.0.x",
-    "grunt-contrib-jshint": "1.1.x",
+    "grunt-contrib-jshint": "3.2.x",
     "grunt-contrib-uglify": "~3.3.0",
     "grunt-conventional-changelog": "6.1.x",
     "grunt-conventional-github-releaser": "1.0.x",
     "grunt-endline": "0.6.x",
-    "grunt-eslint": "19.0.x",
+    "grunt-eslint": "^24.0.0",
     "grunt-simple-mocha": "0.4.x",
     "load-grunt-tasks": "3.5.x",
     "performance-now": "2.0.x",

src/converter.js

@@ -45,7 +45,7 @@ showdown.Converter = function (converterOptions) {
        */
       setConvFlavor = setFlavor,
 
-    /**
+      /**
      * Metadata of the document
      * @type {{parsed: {}, raw: string, format: string}}
      */
@@ -107,7 +107,7 @@ showdown.Converter = function (converterOptions) {
           'Please inform the developer that the extension should be updated!');
         legacyExtensionLoading(showdown.extensions[ext], ext);
         return;
-      // END LEGACY SUPPORT CODE
+        // END LEGACY SUPPORT CODE
 
       } else if (!showdown.helper.isUndefined(extensions[ext])) {
         ext = extensions[ext];

src/helpers.js

@@ -477,7 +477,7 @@ showdown.helper.Event = function (name, text, params) {
  * POLYFILLS
  */
 // use this instead of builtin is undefined for IE8 compatibility
-if (typeof(console) === 'undefined') {
+if (typeof (console) === 'undefined') {
   console = {
     warn: function (msg) {
       'use strict';

src/subParsers/makehtml/codeSpans.js

@@ -28,7 +28,7 @@ showdown.subParser('makehtml.codeSpans', function (text, options, globals) {
 
   text = globals.converter._dispatch('makehtml.codeSpans.before', text, options, globals).getText();
 
-  if (typeof(text) === 'undefined') {
+  if (typeof (text) === 'undefined') {
     text = '';
   }
   text = text.replace(/(^|[^\\])(`+)([^\r]*?[^`])\2(?!`)/gm,

src/subParsers/makehtml/hashHTMLBlocks.js

@@ -70,7 +70,7 @@ showdown.subParser('makehtml.hashHTMLBlocks', function (text, options, globals)
 
       //2. Split the text in that position
       var subTexts = showdown.helper.splitAtIndex(text, opTagPos),
-      //3. Match recursively
+          //3. Match recursively
           newSubText1 = showdown.helper.replaceRecursiveRegExp(subTexts[1], repFunc, patLeft, patRight, 'im');
 
       // prevent an infinite loop

src/subParsers/makehtml/headers.js

@@ -5,13 +5,13 @@ showdown.subParser('makehtml.headers', function (text, options, globals) {
 
   var headerLevelStart = (isNaN(parseInt(options.headerLevelStart))) ? 1 : parseInt(options.headerLevelStart),
 
-  // Set text-style headers:
-  //	Header 1
-  //	========
-  //
-  //	Header 2
-  //	--------
-  //
+      // Set text-style headers:
+      //	Header 1
+      //	========
+      //
+      //	Header 2
+      //	--------
+      //
       setextRegexH1 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n={2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n=+[ \t]*\n+/gm,
       setextRegexH2 = (options.smoothLivePreview) ? /^(.+)[ \t]*\n-{2,}[ \t]*\n+/gm : /^(.+)[ \t]*\n-+[ \t]*\n+/gm;
 

src/subParsers/makehtml/tables.js

@@ -6,7 +6,7 @@ showdown.subParser('makehtml.tables', function (text, options, globals) {
   }
 
   var tableRgx       = /^ {0,3}\|?.+\|.+\n {0,3}\|?[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*:?[ \t]*(?:[-=]){2,}[\s\S]+?(?:\n\n|¨0)/gm,
-    //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
+      //singeColTblRgx = /^ {0,3}\|.+\|\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n(?: {0,3}\|.+\|\n)+(?:\n\n|¨0)/gm;
       singeColTblRgx = /^ {0,3}\|.+\|[ \t]*\n {0,3}\|[ \t]*:?[ \t]*(?:[-=]){2,}[ \t]*:?[ \t]*\|[ \t]*\n( {0,3}\|.+\|[ \t]*\n)*(?:\n|¨0)/gm;
 
   function parseStyles (sLine) {